can't edit Stop Offset of first and last stops in gradient toolbar.

Summary:

• can't change/edit Stop Offset of first and last stops in gradient toolbar.

Steps to reproduce:

• open Inkscape
• create shapes and apply gradient.
• select gradient tool and select frist / last stop.
• you'll see you can't able to update/edit Stop Offset in the toolbar but you can edit them in new gradient editor.

What happened?

doesn't able to change/edit Stop Offset of first and last stops in gradient toolbar. (see attached video)

What should have happened?

should be able to change/edit Stop Offset of first and last stops in gradient toolbar.

Debug info

Inkscape 1.2-dev (3024607aaf, 2021-06-23)

    GLib version:     2.68.3
    GTK version:      3.24.29
    glibmm version:   2.66.1
    gtkmm version:    3.24.5
    libxml2 version:  2.9.10
    libxslt version:  1.1.34
    Cairo version:    1.17.4
    Pango version:    1.48.5
    HarfBuzz version: 2.8.1

    OS version:       Arch Linux

Gradient-Editor-Bug-2